Cellular automaton modelling of the effects of buildings on aeolian bedform dynamics

IF 3.1 3区地球科学 Q2 GEOGRAPHY, PHYSICAL

Aeolian Research Pub Date : 2022-12-01 DOI:10.1016/j.aeolia.2022.100840

Daan W. Poppema , Andreas C.W. Baas , Suzanne J.M.H. Hulscher , Kathelijne M. Wijnberg

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引用次数: 3

Abstract

Buildings affect aeolian sediment transport and bedform development in sandy environments. Cellular automaton (CA) models have, however, only been used to simulate natural bedform dynamics. This study extends a well-known aeolian CA model to include sediment dynamics around buildings, and uses this model to explore the interaction of building-induced deposition and erosion with natural bedform dynamics. New CA rules are introduced to represent acceleration, deceleration and sideward transport of sediment around obstacles. The simulated deposition and erosion patterns show good agreement with field experiments. The model reproduces the shape and location of the morphological pattern around a single building, and effects of building spacing on this pattern for building groups. Model results further demonstrate that building-induced effects interact with local bedform dynamics and can alter the shape, growth and migration of sand dunes.

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建筑物对风成地貌动力学影响的元胞自动机模拟

在沙质环境中，建筑物影响风沙输运和河床发育。然而，元胞自动机(CA)模型仅用于模拟自然的河床动力学。本研究扩展了一个著名的风成CA模型，将建筑物周围的泥沙动力学纳入其中，并利用该模型探索建筑物引起的沉积和侵蚀与自然河床动力学的相互作用。引入新的CA规则来表示泥沙在障碍物周围的加速、减速和侧向移动。模拟的沉积和侵蚀模式与现场试验结果吻合较好。该模型再现了单个建筑周围形态格局的形状和位置，以及建筑间距对建筑群形态格局的影响。模型结果进一步表明，建筑效应与局部地形动力学相互作用，可以改变沙丘的形状、生长和迁移。

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来源期刊

Aeolian Research GEOGRAPHY, PHYSICAL-

CiteScore

7.10

自引率

6.10%

发文量

审稿时长

>12 weeks

期刊介绍： The scope of Aeolian Research includes the following topics: • Fundamental Aeolian processes, including sand and dust entrainment, transport and deposition of sediment • Modeling and field studies of Aeolian processes • Instrumentation/measurement in the field and lab • Practical applications including environmental impacts and erosion control • Aeolian landforms, geomorphology and paleoenvironments • Dust-atmosphere/cloud interactions.